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Spray sterilization, the ratio of the spray is ferrous sulfate: quicklime: water = 3:3:100. Spray and spray evenly when spraying, with the spray. It is worth noting that it can't be sprayed in rainy days, it can't be sprayed in the windy days, it can't be sprayed when there is dew in the morning and evening, and the high temperature weather can't be sprayed. Otherwise, it is easy to cause the fruit tree to cause phytotoxicity or reduce the efficacy. It is best to spray it after 8-10 am and after 3 pm.
In order to eliminate and eliminate the breeding and breeding of pests and diseases, the orchard should be thoroughly cleaned after the fruit trees enter the dormant period. The dead leaves with pests and diseases in the garden are cleaned and burned or buried deeply.
Autumn fruit trees, whether purchased or exported, must pass the physical quarantine of the phytosanitary department. All seedlings with pests and diseases will be destroyed, and those who pass the test can be traded and cultivated.
Orchards are more or less infected with pests and diseases during successive years of production. In the late autumn and early winter, insecticidal sterilization should be based on prevention, prevention and control, so that the fruit trees are not affected by pests and diseases, and promote the growth of fruit trees.
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